What is the ruling on installing television cables inside the walls of homes prepared for sale, knowing that not installing them may affect the sale of the house or its price?

It is permissible for someone who builds and sells houses to install television connections therein, unless he knows or has strong reason to believe that a specific buyer will use the television for something forbidden. If he is ignorant of the buyer's intentions, then there is no blame upon him. This follows the jurisprudential principle regarding the ruling on selling something that might be used to facilitate disobedience. Ibn Qudamah stated: "Selling juice to someone whom one believes will turn it into wine is forbidden," and that the sale becomes forbidden and invalid if the seller knows the buyer's forbidden intention through his words or circumstantial evidence. However, if the matter is uncertain, there is no blame. It is mentioned in the Fiqh Encyclopedia that anything intended for something forbidden or that leads to disobedience is prohibited, and it is impermissible to sell something when it is known that the buyer intends to use it for an impermissible purpose. Therefore, if the intention of a specific buyer for something forbidden is known, then providing the connection to him is prohibited. However, if there is ignorance regarding the specific buyer or his situation, then there is no blame.